CN103379570A - Service processing method, base station and user equipment - Google Patents
Service processing method, base station and user equipment Download PDFInfo
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- CN103379570A CN103379570A CN2012101181819A CN201210118181A CN103379570A CN 103379570 A CN103379570 A CN 103379570A CN 2012101181819 A CN2012101181819 A CN 2012101181819A CN 201210118181 A CN201210118181 A CN 201210118181A CN 103379570 A CN103379570 A CN 103379570A
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Abstract
The invention provides a service processing method, a base station and user equipment. The service processing method includes the steps of receiving measurement reports which are related to D2D and transmitted by first UE and second UE respectively, determining that the first UE and the second UE in cellular communication reach D2D communication conditions according to the measurement reports, then transmitting configuration messages for configuring the D2D communication to the first UE and the second UE respectively, enabling the configuration messages to be used by the first UE and the second UE to conduct D2D communication connection, retaining service connection contexts built between the first UE and the base station and between the second UE and the base station when the first UE and the second UE conduct the cellular communication after the first UE and the second UE are switched from the cellular communication to the D2D communication, and using the service connection contexts to conduct service data transmission with the first UE and the second UE after the first UE and the second UE are switched from the D2D communication to the cellular communication. According to the service processing method, the situation that a service is not interrupted during switching between the D2D communication and the cellular communication can be guaranteed.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of method for processing business, base station and subscriber equipment.
Background technology
Network towards IMT-Advanced (IMT-Advanced) is the network of an isomery, wherein the system of existing centralized control (is cellular system, WiMAX for example, LTE, TD-SCDMA etc.), comprise again between subscriber equipment can direct communication ad-hoc or MESH (netted) system.In the Centralized Control System, the communication between all subscriber equipmenies (User Equipment is called for short U E) will be passed through the control of base station (BS, perhaps NB, eNB).And in the ad-hoc network, can directly communicate between UE1, the UE2, perhaps carry out relaying by another UE.
In cellular network, even two UE (such as UE1, UE2) are adjacent very near, the also control that communicates of the master controller by base station and so on.The advantage of system of centralized like this control is to be convenient to resource management and to disturb control, but shortcoming is that the service efficiency of resource is not high.For example, even two U E close proximity also will communicate with double resource.Therefore, in order to improve the frequency spectrum service efficiency, obtain higher throughput of system, pattern such as the end-to-end (Device-to-Device of direct communication between a kind of UE have been proposed among the LTE-Advanced, be called for short D2D), such communication network will no longer be the network of single-mode, but centralized network and distributed network and the hybrid network deposited.Compare with the network of single-mode, hybrid network can promote the performance of communication system undoubtedly largelyr.
The D2D system belongs to the ad-hoc system, is fully distributed, is satisfying under the certain condition and can directly communicate between the subscriber equipment.The D2D system is mode and the shared same asset of cellular system with Underlay in the prior art, to improve the availability of frequency spectrum.Especially, the UE in the D2D system need to receive the control of cellular system, so that the business such as information sharing, game, social service and moving advertising to be provided.When carrying out D2D communication between two UE, need in certain, get back to cellular communication, so UE may switch back and forth between D2D communication and cellular communication.
Yet in the prior art, in a single day the service interaction between two UE has selected D2D communication, just can't be converted to cellular communication again, and vice versa.Cause thus D2D communication and cellular communication mutually not to change, have the possibility of D2D service disconnection.How to guarantee that two service interactions between the UE do not interrupt becoming the current technical issues that need to address when switching between D2D communication and cellular communication.
Summary of the invention
For defective of the prior art, the embodiment of the invention provides a kind of method for processing business, base station and subscriber equipment.
The method for processing business that the embodiment of the invention provides comprises:
Receive the measurement report relevant with end-to-end D2D that the first user equipment UE sends respectively with the 2nd UE;
Determine that according to described measurement report a described UE and described the 2nd UE in the cellular communication reach the D2D communication condition, then send respectively the configuration messages that configuration D2D communicates by letter to a described UE and described the 2nd UE, described configuration messages is used for carrying out the D2D communication connection by a described UE and described the 2nd UE; And
After a described UE and described the 2nd UE switch to D2D from described cellular communication and communicate by letter, the service connection context of setting up with the base station respectively when keeping a described UE and the 2nd UE and carrying out cellular communication;
A described UE and described the 2nd UE communicate by letter from described D2D switch to cellular communication after, use described service connection context and a described UE and described the 2nd UE to carry out the transmission of business datum.
The method for processing business that the embodiment of the invention provides comprises:
Carry out in the cellular communication process at user equipment (UE) and another UE, described UE sends the measurement report relevant with end-to-end D2D to the base station;
Described UE receives described base station in response and carries out the configuration messages that D2D communicates by letter in the described UE that described measurement report sends with another UE;
After described UE carries out the D2D communication connection according to described configuration messages and described another UE, the service connection context of setting up with described base station when keeping described UE and carrying out cellular communication, and in described D2D communicates by letter service data transmission;
After described D2D communication switches to cellular communication, use described service connection context and base station to carry out the transmission of business datum at described UE.
The base station that the embodiment of the invention provides comprises:
Receiving element is used for receiving the measurement report relevant with end-to-end D2D that the first user equipment UE sends respectively with the 2nd UE;
Determining unit is used for determining according to described measurement report whether a described UE of cellular communication and described the 2nd UE reach the D2D communication condition;
Transmitting element, be used for determining that in described determining unit a described UE and described the 2nd UE reach the D2D communication condition, then send respectively the configuration messages that configuration D2D communicates by letter to a described UE and described the 2nd UE, described configuration messages is used for carrying out the D2D communication connection by a described UE and described the 2nd UE;
Stick unit is used for after a described UE and described the 2nd UE switch to D2D from described cellular communication and communicate by letter, when keeping a described UE and the 2nd UE and carrying out cellular communication respectively with the service connection context of base station foundation;
Data transmission unit, be used for a described UE and described the 2nd UE communicate by letter from described D2D switch to cellular communication after, use described service connection context and a described UE and described the 2nd UE to carry out the transmission of business datum.
The subscriber equipment that the embodiment of the invention provides comprises:
Transmitting element is used for carrying out the cellular communication process at user equipment (UE) and another UE, sends the measurement report relevant with end-to-end D2D to the base station;
Receiving element is used for receiving described base station in response and carries out the configuration messages that D2D communicates by letter in the described UE that described measurement report sends with another UE;
Stick unit is used for after carrying out the D2D communication connection according to described configuration messages with described another UE, when keeping described UE and carrying out cellular communication with the service connection context of described base station foundation, and in described D2D communicates by letter service data transmission; And after described D2D communication switches to cellular communication, use described service connection context and base station to carry out the transmission of business datum at described UE.
As shown from the above technical solution, the method for processing business of the embodiment of the invention, base station and subscriber equipment, by according to a UE in the cellular communication, the measurement report relevant with D2D that the 2nd UE sends determined a UE, when the 2nd UE can carry out D2D communication, to a UE, the 2nd UE sends configuration messages, so that a UE and the 2nd UE set up the D2D communication connection, and the base station keeps the service connection context of a UE and base station communication after a UE and the 2nd UE switch to D2D from cellular communication and communicate by letter, the service connection context of the 2nd UE and base station communication uses above-mentioned service connection context to carry out the transmission of business datum so that a UE and the 2nd UE communicate by letter from D2D when switching to cellular communication; And then realized that the business datum between two UE can switch between D2D communication and cellular communication, and can guarantee that business datum do not interrupt, reduced the load of base station, effectively saved the resource of cellular network.
Description of drawings
In order to be illustrated more clearly in technical scheme of the present invention, the below will do one to the accompanying drawing of required use among the embodiment and introduce simply, apparently: following accompanying drawing is the accompanying drawing of some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain to realize equally according to these accompanying drawings other accompanying drawing of technical solution of the present invention.
Fig. 1 is the applied scene graph of method for processing business of the present invention;
Fig. 2 is the scene graph of the switching of subscriber equipment of the present invention between D2D communication and cellular communication;
The schematic flow sheet of the method for processing business that Fig. 3 provides for one embodiment of the invention;
The schematic flow sheet of the method for processing business that Fig. 4 provides for one embodiment of the invention;
The schematic flow sheet of the method for processing business that Fig. 5 provides for one embodiment of the invention;
The schematic flow sheet of the method for processing business that Fig. 6 provides for one embodiment of the invention;
The structural representation of the base station that Fig. 7 provides for one embodiment of the invention;
The structural representation of the subscriber equipment that Fig. 8 provides for one embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme of the present invention is clearly and completely described.Obviously, each following embodiment is the embodiment of a part of the present invention.Based on each following embodiment of the present invention, those of ordinary skills are even without making creative work, also can be by equivalent transformation part even whole technical characterictics, and obtain to solve the technology of the present invention problem, realize other embodiment of the technology of the present invention effect, and these conversion and each embodiment of coming does not obviously break away from scope disclosed in this invention.
The embodiment of the invention is applied to Long Term Evolution (Long Term Evolution is called for short LTE), 2G/3G network.Take the LTE scene as example, referring to Fig. 1, Fig. 2, wherein, UE3, UE2 respectively with the network side base station communication, but also direct communication of UE2 and UE3, above-mentioned two kinds of communications can be used identical resource (such as frequency spectrum resource); The mode of direct communication is the D2D communication mode between this UE2 and the UE3, and the resource that UE2 and UE3 use is base station assigns.
Usually; the LTE security of system is at PDCP (Packet Data Convergence Protocol; be called for short PDCP) layer realization; the PDCP layer comprises safely to be encrypted and integrity protection two parts; wherein business datum is only implemented to encrypt; signaling data implement to be encrypted and two kinds of safeguard protections of integrity protection, and the UE2 of the embodiment of the invention communicates by letter with D2D between the UE3 and only relates to the transmission of business datum, does not relate to the transmission of signaling data.
Business datum between two UE in the embodiment of the invention at first be UE2--base station--UE3 alternately, when the signal quality (such as transmitting power) of UE2 and UE3 can satisfy the condition that D2D communicates by letter, the base station issues configuration messages to UE2, UE3, so that UE2 and UE3 establish a communications link, with direct business transferring data.
Among the following embodiment, the UE2 among Fig. 1 is defined as a UE, and the UE3 among Fig. 1 is defined as the 2nd UE.Wherein, a UE can send business datum to the two UE, also can receive the business datum that the 2nd UE sends.
Embodiment one
Fig. 3 shows the schematic flow sheet of the method for processing business that one embodiment of the invention provides, and as shown in Figure 3, the method for processing business in the present embodiment is as mentioned below.
301, the base station receives the measurement report relevant with D2D that a UE sends respectively with the 2nd UE.
For instance, can comprise in the measurement report corresponding with a UE: the transmitting power of the 2nd UE or signal quality etc.; Can comprise in the measurement report corresponding with the 2nd UE: the transmitting power of a UE or signal quality etc.
302, the base station determines that according to measurement report a UE and the 2nd UE in the cellular communication reach the D2D communication condition, then send respectively the configuration messages that configuration D2D communicates by letter to a UE and the 2nd UE, described configuration messages is used for carrying out the D2D communication connection by a described UE and described the 2nd UE.
The transmitting power that above-mentioned D2D communication condition can be an above-mentioned UE and/or the 2nd UE all reaches default threshold value.
Perhaps,
The D2D communication condition comprises that the signal quality that a UE measures the 2nd UE satisfies the D2D communicating requirement, and/or the signal quality that the 2nd UE measures a UE satisfies the D2D communicating requirement.
For instance, the configuration messages at this place comprises: set up required control information and the security parameter of D2D communication connection that is used for service data transmission.
Further, control information can comprise: the up-downgoing in the indication D2D communication; Perhaps, the base station indicate a UE and the 2nd UE one of them be main UE, another is from UE, determines from main UE to the data from U E to be up the D2D communication.
Perhaps, in other embodiment, one of them of indicating a UE and the 2nd UE is main UE, another is for from UE, determines from main UE to the data from UE to be descending the D2D communication.
Especially, above-mentioned main UE can be regarded as virtual base station, and at this moment, virtual base station then is descending to the data that another UE sends.For example, the base station indicate a UE and the 2nd UE one of them be virtual base station, in order to determine the up-downgoing in the D2D communication.
By determining of up-downgoing, the two kinds of transmission directions of two UE in the D2D communication can be divided into up-downgoing.
Certainly also can determine up-downgoing according to certain rule in the practical application, the data of the receiving end of for example making a start are up, otherwise are descending.
In other embodiment, the control information at this place also can comprise: the contents such as the running time-frequency resource of business datum, D2D communication identifier.
Security parameter in this step can comprise following one or more: the COUNT value of the up-downgoing indication of the security algorithm of the key of D2D communication, the parameter that produces the key of D2D communication, D2D communication, the carrying of D2D communication, D2D communication, the counting of D2D communication.
303, after a UE and the 2nd UE switch to D2D from cellular communication and communicate by letter, the service connection context of setting up with the base station respectively when keeping a UE and the 2nd UE and carrying out cellular communication.
304, a UE and the 2nd UE communicate by letter from D2D switch to cellular communication after, use service connection context and a UE, the 2nd UE keep to carry out the transmission of business datum.
That is to say, the service connection context of each UE that the base station keeps is used for transmission and switches back cellular communication by the business datum of base-station transmission from D2D communication, so that when two UE were switched in D2D communication and cellular communication mutually, the transmission of business datum was not interrupted.
Further, the base station keeps the service connection context of a UE and base station communication, the first security parameter when namely keeping a UE and base station communication in the service connection context.For instance, the first security parameter can comprise: first security algorithm of a U E in cellular communication, the first key, the first carrying etc.;
Correspondingly, the base station keeps the service connection context of the 2nd UE and base station communication, the second security parameter when namely keeping the 2nd UE and base station communication in the service connection context.For instance, the second security parameter can comprise: second security algorithm, second key and second carrying etc. of the 2nd UE in cellular communication.
Preferably, the first security parameter also comprises: the configuration of the COUNT value of the counting of a UE in cellular communication, each layer of protocol stack correspondence etc.; The second security parameter also comprises: the configuration of the COUNT value of the counting of the 2nd UE in cellular communication, each layer of protocol stack correspondence etc.
Need to prove, carrying in the above-mentioned steps 302 in the security parameter of configuration messages (being the carrying in the D2D communication) can be consistent with the first carrying that a UE uses in cellular communication, perhaps, can be consistent with the second carrying that the 2nd UE uses in cellular communication.For instance, if control information indicating the one UE of configuration messages is virtual base station, the 2nd UE is terminal, and the at this moment carrying in the security parameter of configuration messages can be consistent with the second carrying that the 2nd UE uses in cellular communication.
The UE2 of cellular communication, UE3 (as shown in Figure 1) have a cover security parameter with eNB separately in the prior art, it is used in cellular communication business datum being encrypted transmission, and two cover security parameters (being the security parameter of security parameter, UE3 and the eNB of UE2 and eNB) are uncorrelated mutually.
And in D2D communication, consult a cover security parameter between UE2, the UE3.If same service needed is switched between D2D communication and cellular communication, and the assurance business do not interrupt, and the base station is necessary for the security parameter that UE2, the UE3 that realizes D2D communication keeps part in the former cellular communication so.
Current, for each UE, the security parameter of base station configuration can comprise: KEY (key), COUNT (count value of counter), DIRECTION (up-downgoing indication), BEARER (carrying) etc.In addition, also have a security algorithm to come according to the UE ability, each UE supports that security algorithm is certain, and is indeclinable.When UE entered radio resource control (Radio Resource Control is called for short RRC) connection mode, eNB need to be for each UE configuration security parameter, so that UE and eNB begin business datum is carried out secure interactive.
Wherein, KEY is the key that draws according to the calculation of parameter of network delivery in this locality, and the COUNT value is with regard to the count value of a suitable counter, and it is used for the packet of PDCP (PDCP) infill layer data is counted.Usually, the COUNT value comprises that two parts form, as represents the SN value of high-order HFN value and expression low level, and DIRECTION is the up-downgoing indication, and BEARER is carrying.
Need to prove that H FN value and SN value in the COUNT value at this place are existing content, present embodiment no longer is described in greater detail.
By above-described embodiment as can be known, the method for processing business of present embodiment, by according to a UE in the cellular communication, the measurement report relevant with D2D that the 2nd UE sends determined a UE, when the 2nd UE can carry out D2D communication, to a UE, the 2nd UE sends configuration messages, so that a UE and the 2nd UE set up the D2D communication connection, with service data transmission, and the base station keeps the service connection context of a UE and base station communication after a UE and the 2nd UE switch to D2D from cellular communication and communicate by letter, the service connection context of the 2nd UE and base station communication uses above-mentioned service connection context to carry out the transmission of business datum so that a UE and the 2nd UE communicate by letter from D2D when switching to cellular communication; And then realized that the business datum between two UE can switch between D2D communication and cellular communication, and can guarantee that business datum do not interrupt, reduced the load of base station, effectively saved the resource of cellular network.
Embodiment two
Fig. 4 shows the schematic flow sheet of the method for processing business that one embodiment of the invention provides, and as shown in Figure 4, the method for processing business in the present embodiment is as mentioned below.
401, the base station receives the measurement report relevant with D2D that a UE sends respectively with the 2nd UE; The base station determines that according to measurement report a UE and the 2nd UE in the cellular communication reach the D2D communication condition, then send respectively the configuration messages that configuration D2D communicates by letter to a UE and described the 2nd UE, this configuration messages is used for carrying out the D2D communication connection by a UE and the 2nd UE.
402, the base station is after a UE and the 2nd UE switch to D2D from cellular communication and communicate by letter, the service connection context that keeps a UE and base station communication, the first security parameter in the service connection context for example, and the service connection context that keeps the 2nd UE and base station communication, the second security parameter in the service connection context for example, and then a UE and the 2nd UE communicate by letter from D2D switch to cellular communication after, use described service connection context and a UE and the 2nd UE to carry out the transmission of business datum.
403, communicate by letter when switching to cellular communication from D2D at a UE and the 2nd UE, the one UE keeps respectively the D2D that uses in the D2D communication with the 2nd UE and connects context, for example keep the security parameter that D2D connects the D2D communication in the context, so that the security parameter that a UE and the 2nd UE use the D2D that keeps to communicate by letter carries out the transmission of business datum when cellular communication switches to D2D and communicate by letter.
That is to say that the base station makes a UE and the 2nd UE again use a UE and be connected the D2D that uses the D2D communication that the 2nd UE keeps respectively and connect context and carry out the transmission of business datum when cellular communication switches to D2D communication.
404, a UE and the 2nd UE communicate by letter from D2D switch to cellular communication after, be connected up and down day at the communicate by letter D2D of middle use of D2D if a UE, the 2nd UE keep respectively a UE and the 2nd UE,
At this moment, the base station receives the communication information that service connection context that a UE keeps by a UE sends to the base station, carries a UE in the communication information and keeps described D2D and connect contextual information;
When a described UE and described the 2nd UE again switch to described D2D and communicate by letter from described cellular communication, indicate a described UE and be connected the 2nd UE and use described D2D to connect context to carry out the transmission of described business datum.
In other embodiments, the communication information that the service connection context that the base station also can the 2nd UE keeps by the 2nd UE sends to the base station carries described the 2nd UE and keeps described D2D and connect contextual information in the communication information; And then when a UE and the 2nd UE again switch to D2D and communicate by letter from cellular communication, indicate a UE and the 2nd UE to use D2D to connect context and carry out the transmission of described business datum.
Perhaps, the base station receives the above-mentioned communication information that a UE and the 2nd UE send respectively simultaneously.
In another kind of application scenarios,, the sign of carrying the security parameter that D2D with a grain of salt communicates by letter in the measurement report relevant with D2D that a UE sends to the base station.The sign of carrying the security parameter of D2D communication with a grain of salt in the measurement report that perhaps, the D2D that sends to the base station of the 2nd UE is relevant.
In addition, when the business datum of transmitting between a UE and the 2nd UE switches to by base-station transmission (being cellular communication) from D2D communication, the one UE and the 2nd UE can be carried at the Partial security parameter of business datum in the above-mentioned communication information and be transferred to the base station, and for example the Partial security parameter of transmission can comprise one or more following combinations: counting (SN) value of packet data convergence (PDCP) layer; Counting (HFN) value of packet data convergence (PDCP) layer.
The counting at this place (SN) value and/or counting (HFN) value form the COUNT value of counter.
Need to prove, if the Partial security parameter of above-mentioned transmission is only carried the HFN value, then SN value zero clearing, in actual applications, if above-mentioned HFN value, SN value all are carried in the security parameter of transmission, this moment also can be with the zero clearing of SN value.
For instance, the base station can receive the communication information that a UE that a UE passes through to keep and the first security parameter between the base station send, and/or, receive the communication information that the 2nd UE that the 2nd UE passes through to keep and the second security parameter between the base station send; And realize cellular communication between a UE and the 2nd UE according to communication information.Carry the SN value of above-mentioned PDCP layer in the communication information at this place, and/or, the HFN value of PDCP layer, and carry and keep described D2D and connect contextual information.
Can between cellular communication and D2D communication, mutually switching alternately of business datum between above-mentioned two UE.
In actual applications, the one UE and the 2nd UE in cellular communications networks separately and the COUNT value of the counter in the security parameter between the base station can discontinuity continuity, carrying out D2D when communicating by letter such as a UE with the 2nd UE, separately the COUNT value of counter is retained in the cellular communication, a UE and the 2nd UE communicate by letter from D2D switch to cellular communication after, can adopt the COUNT value of the former counter that in cellular communication, keeps to carry out follow-up variation.
Accordingly, the continuity that the COUNT value of the security parameter Counter of the communication of the D2D between a UE and the 2nd UE also can discontinuity in the D2D communication.
In another embodiment, also be a UE with the 2nd UE by D2D communicate by letter, business datum of cellular communications transmissions, can jointly continue the COUNT value of counter in D2D communication this moment, the cellular communication.
For example, a UE carries the COUNT value of the counter that D2D communicates by letter in a UE who adopts the base station to keep and communication information that the first security parameter between the base station sends when switching to cellular communication from D2D communication;
Correspondingly, carry the COUNT value of the counter that D2D communicates by letter in the 2nd UE the 2nd UE that also can keep in the base station and the communication information that the second security parameter between the base station sends; And
When the one UE and the 2nd UE switch to D2D and communicate by letter from cellular communication, the COUNT value that can in the security parameter of the D2D of configuration messages communication, carry the counter of a UE in the cellular communication, perhaps the COUNT value of the counter of the 2nd UE.
In actual applications, communicate by letter when switching to cellular communication from D2D at a UE and the 2nd UE, a UE can no longer keep the D2D that uses in the D2D communication with the 2nd UE and connect context, the security parameter of D2D communication described above.For example, when the D2D communication condition that detects a current UE and the 2nd UE as a UE and/or the 2nd UE did not satisfy, a UE can no longer keep the D2D that uses in the D2D communication with the 2nd UE and connect context, the security parameter of aforesaid D2D communication.
Further, if in other embodiments, if a UE, the 2nd UE switch to cellular communication from D2D communication, the first security parameter of a uncensored corresponding UE in the cellular communication, and the second security parameter of corresponding the 2nd UE, then the base station needs to set up respectively the security parameter separately of corresponding a UE, the 2nd UE, with as new Business Processing, this moment upper one is by service ending or the interruption of D2D communication, and the new counting of the COUNT value of the counting in new business beginning.
By above-described embodiment as can be known, the method for processing business of present embodiment has realized that the business datum between two UE can be switched between D2D communication and cellular communication, guarantee that business datum do not interrupt, reduce the load of base station, effectively saved the resource of cellular network.
Embodiment three
Fig. 5 shows the schematic flow sheet of the method for processing business that one embodiment of the invention provides, and as shown in Figure 5, the method for processing business in the present embodiment is as mentioned below.
501, carry out in the process of cellular communication at a UE and the 2nd UE, the base station receives the second measurement message that message, the 2nd UE transmission are measured in first of UE transmission, and first measures message comprises: the signal quality of the 2nd UE; Second measures message comprises: the signal quality of a UE.
For instance, the signal quality at this place can be the information such as transmitting power, received power.
If 502, the base station determines that the signal quality of the UE in the cellular communication and the signal quality of the 2nd UE reach default threshold value, then send respectively the configuration messages that configuration D2D communicates by letter to a UE and described the 2nd UE, this configuration messages is used for carrying out the D2D communication connection by a UE and the 2nd UE.
503, the base station keeps the service connection context of a UE and base station communication, the service connection context of the 2nd UE and base station communication after a UE and the 2nd UE switch to D2D from cellular communication and communicate by letter.
Usually, the base station keeps the first security parameter in the service connection context of a UE and base station communication, and keeps the second security parameter in the service connection context of the 2nd UE and base station communication.
For instance, base station the first security parameter of keeping a UE and base station communication comprises: the first security algorithm, the first key and the first carrying;
The second security parameter that the base station keeps the 2nd UE and base station communication comprises: the second security algorithm, the second key and the second carrying.
Preferably, the first security parameter also comprises: the COUNT value of the counting of a U E in cellular communication; The second security parameter also comprises: the COUNT value of the counting of the 2nd UE in cellular communication.
504, a UE and the 2nd UE communicate by letter from D2D switch to cellular communication after, use described service connection context and a UE, the 2nd UE to carry out the transmission of business datum, and
The one UE and the 2nd UE keep respectively the security parameter that D2D uses in communicating by letter, so that the security parameter that a UE and the 2nd UE use the D2D that keeps to communicate by letter when cellular communication switches to D2D and communicate by letter carries out the transmission of business datum.
Particularly, a UE and the 2nd UE keep respectively the security parameter that D2D uses in communicating by letter, and comprising: the carrying that the key of the security algorithm of D2D communication, D2D communication is communicated by letter with D2D.
Preferably, a UE and the 2nd UE keep respectively the security parameter that D2D uses in communicating by letter, and also comprise: the COUNT value of the counting of D2D communication.
Alternatively, in the Another Application scene, above-mentioned method for processing business also can comprise unshowned step 505 and step 506 among following Fig. 5.
505, when a UE and the 2nd UE switched to D2D and communicate by letter from cellular communication, the base station sent to core net and comprises that a UE enters the message that D2D communicates by letter with the 2nd UE.
This step is used for explanation, and the base station informs that to core net two UE enter D2D, can reduce or remit charge etc.
506, communicate by letter when switching to cellular communication from D2D at a UE and the 2nd UE, the base station sends to core net and comprises that a UE and the 2nd UE enter the message of cellular communication.
Further need to prove, if in D2D communication, the service ending between a UE and the 2nd UE, a UE no longer keeps D2D with the 2nd UE and connects context;
Correspondingly, the base station also need receive the message of informing of service ending between a UE that service connection context that a UE and/or the 2nd UE keep by a UE and/or the 2nd UE sends and the 2nd UE;
At this moment, the base station is according to informing that message discharges the service connection context corresponding with a UE, the 2nd UE difference that keeps, the contents such as the first security parameter that as above exemplifies, the second security parameter.That is to say that the base station is according to informing that message is released to the service connection context of a UE and the 2nd UE reservation.
Certainly, in cellular communication, if the service ending between a UE and the 2nd UE, and a UE all remains with D2D with the 2nd UE and connects context, correspondingly, the UE of transmitting terminal to the base station, the UE of receiving terminal all sends the message of service ending corresponding service connection context, receiving terminal discharge corresponding service connection context, D2D connects context etc. so that the base station discharges.
For instance, the UE of transmitting terminal sends the message of service ending to the base station by corresponding service connection context; The UE of transmitting terminal connects context sends message from service ending to the UE of receiving terminal by D2D.
By above-described embodiment as can be known, the method for processing business of present embodiment can effectively realize can switching alternately of two business datums between the UE between D2D and cellular communication, and business procedure is not interrupted.
Embodiment four
601, carry out in the cellular communication process at UE and another UE, UE sends the measurement report relevant with D2D to the base station.
602, UE reception base station in response is carried out the configuration messages that D2D communicates by letter in the UE that described measurement report sends with another UE.
Configuration messages in the present embodiment comprises: set up required control information and the security parameter of described D2D communication connection that is used for service data transmission.
For instance, control information comprises: the up-downgoing in the indication D2D communication; Perhaps base station indication UE or another UE are main UE and from UE, determine from main UE to the data from UE to be uplink/downlink the D2D communication; Perhaps base station indication UE or another UE are virtual base station, and the data that virtual base station sends to another UE are downlink data, and the data that another UE sends to virtual base station/main UE are upstream data.
Certainly, in actual applications, above-mentioned control information also can determine that up-downgoing, the data of the receiving end of for example making a start are up in the D2D communication according to certain rule, otherwise is descending in communicating by letter of D2D.
Security parameter in the above-mentioned configuration messages comprises the COUNT value of counting of up-downgoing indication, the D2D communication of carrying, the D2D communication of security algorithm, the D2D communication of the key of one or more in the following items: D2D communication, the parameter that produces the key of D2D communication, D2D communication.
The carrying that it should be noted that the D2D communication in the security parameter of configuration messages is consistent with the carrying that UE uses in cellular communication, and perhaps, the carrying that the D2D in the security parameter of configuration messages communicates by letter is consistent with the carrying that another UE uses in cellular communication.
603, after UE carries out the D2D communication connection according to configuration messages and another UE, the service connection context of setting up with the base station when keeping UE and carrying out cellular communication, and in D2D communicates by letter service data transmission, and
After D2D communication switches to cellular communication, use service connection context and base station to carry out the transmission of business datum at UE.
Further, after UE switched to cellular communication again from D2D communication, above-mentioned method for processing business also comprised unshowned step 604 among following Fig. 6.
604, UE keeps the D2D that uses in the D2D communication and connects context; UE switches to D2D communication again from cellular communication after, use D2D to connect context and carry out the transmission of described business datum.
Certainly, UE keeps the D2D connection context that uses in the D2D communication and comprises security parameter, the security parameter of D2D communication.
The security parameter of D2D communication comprises in the present embodiment: the carrying that the key of the security algorithm of D2D communication, D2D communication is communicated by letter with D2D; Perhaps, the security parameter of D2D communication comprises: the COUNT value of the counting that the key of the security algorithm of D2D communication, D2D communication, the carrying of D2D communication are communicated by letter with D2D.
Preferably, above-mentioned method for processing business also comprises not shown step 605.
605, after UE switched to cellular communication again from D2D communication, UE kept the D2D that uses in the D2D communication and connects context; And the service connection context that UE passes through to keep sends communication information to the base station, carries described U E in the communication information and keeps described D2D and connect contextual information;
UE switches to D2D communication again from cellular communication after, use D2D to connect context according to the base station indication and carry out the transmission of described business datum.
Further, if in D2D communication, service ending between UE and another UE, then the UE service connection context that passes through to keep sends the message of informing of service ending between UE and another UE to the base station, the described message of informing be used for to discharge the contextual message of service connection that institute's correspondence keeps by described base station, with the service connection context of informing base station release reservation.
Certainly, in cellular communication, if the service ending between a UE and the 2nd UE, and a UE all remains with D2D with the 2nd UE and connects context, correspondingly, the D2D that the UE of transmitting terminal also need pass through to keep connects context to the message that the UE of receiving terminal sends service ending, connects context etc. so that receiving terminal UE discharges corresponding D2D.
By above-described embodiment as can be known, the method for processing business of present embodiment can effectively be realized can switching alternately of two business datums between the UE between D2D and cellular communication, and business procedure is not interrupted.
Embodiment five
According to a further aspect in the invention, the present invention also provides a kind of base station, and as shown in Figure 7, the base station comprises: receiving element 71, determining unit 72, transmitting element 73, stick unit 74 and data transmission unit 75;
Wherein, receiving element 71 is used for receiving the measurement report relevant with D2D that a UE sends respectively with the 2nd UE; Determining unit 72 is used for determining according to measurement report whether a UE of cellular communication and the 2nd UE reach the D2D communication condition; Transmitting element 73 is used for determining that in determining unit 72 UE and the 2nd UE reach the D2D communication condition that then send respectively the configuration messages that configuration D2D communicates by letter to a UE and the 2nd UE, configuration messages is used for carrying out the D2D communication connection by a UE and the 2nd UE; Stick unit 74 is used for after a UE and the 2nd UE switch to D2D from cellular communication and communicate by letter, when keeping a UE and the 2nd UE and carrying out cellular communication respectively with the service connection context of base station foundation; Data transmission unit 75 uses described service connection context and a described UE and described the 2nd UE to carry out the transmission of business datum after switching to cellular communication for communicating by letter from D2D at a UE and the 2nd UE.
Determining unit 72 in the present embodiment can be hardware processor.
Further, the first security parameter of stick unit 74 is concrete when being used for keeping a UE and base station communication service connection context, and the second security parameter in the service connection context when keeping the 2nd UE and described base station communication.
Above-mentioned configuration information comprises: set up required control information and the security parameter of described D2D communication connection that is used for service data transmission.
For instance, control information can comprise: the up-downgoing in the indication D2D communication; Perhaps, one of them of indicating a UE and the 2nd UE is main UE, another is for from UE, determines from main UE to the data from UE to be up the D2D communication; Perhaps, one of them of indicating a UE and the 2nd UE is main UE, another is for from UE, determines from main UE to the data from UE to be descending the D2D communication; Perhaps, one of them of indicating a UE and the 2nd UE is virtual base station, in order to determine the up-downgoing in the D2D communication.
Security parameter comprises one or more in the following items: the COUNT value of the up-downgoing indication of the security algorithm of the key of D2D communication, the parameter that produces the key of D2D communication, D2D communication, the carrying of D2D communication, D2D communication, the counting of D2D communication.
Especially, the carrying of D2D communication is consistent with the first carrying that a U E uses in cellular communication, and perhaps, the carrying of D2D communication is consistent with the second carrying that described the 2nd UE uses in cellular communication.
Certainly, aforesaid stick unit 74 also be used for a UE and the 2nd UE communicate by letter from D2D switch to cellular communication after, be connected context if a UE, the 2nd UE keep respectively a UE and the 2nd UE at the communicate by letter D2D of middle use of D2D,
Correspondingly, receiving element 71 also be used for to receive a UE by the communication information of the corresponding service connection context that keeps of institute to the base station transmission, carries a described UE in the communication information and keeps described D2D and connect contextual information;
And/or
Receive the 2nd UE by the communication information of the corresponding service connection context that keeps of institute to the base station transmission, carry the 2nd UE in the communication information and keep described D2D and connect contextual information;
When a UE and the 2nd UE again switch to D2D and communicate by letter from cellular communication, indicate a UE and be connected the 2nd UE and use described D2D to connect context to carry out the transmission of described business datum.
Need to prove that D2D connects context and comprises: the security parameter of D2D communication; For instance, the security parameter of D2D communication comprises: the carrying that the key of the security algorithm of D2D communication, D2D communication is communicated by letter with D2D; Perhaps, the COUNT value of the carrying of the key of the security algorithm of D2D communication, D2D communication, the D2D communication counting of communicating by letter with D2D.
Further, the base station also can comprise: releasing unit, be used for to receive the message of informing of service ending between a UE that service connection context that a UE and/or the 2nd UE keep by a UE and/or the 2nd UE sends and the 2nd UE, and discharge the service connection context that keeps with a UE and the 2nd UE that keeps according to the described message of informing.
By above-described embodiment as can be known, can switching alternately of two business datums between the UE can be realized in the base station of present embodiment between D2D and cellular communication, and business procedure is not interrupted.
Embodiment six
According to a further aspect in the invention, the present invention also provides a kind of subscriber equipment, and as shown in Figure 8, the subscriber equipment of present embodiment comprises: transmitting element 81, receiving element 82 and stick unit 83;
Wherein, transmitting element 81 is used for carrying out the cellular communication process at UE and another UE, sends the measurement report relevant with D2D to the base station; Receiving element 82 is used for receiving base station in response and carries out the configuration messages that D2D communicates by letter in the UE that measurement report sends with another UE; Stick unit 83 is used for after carrying out the D2D communication connection according to configuration messages with another UE, when keeping UE and carrying out cellular communication with the service connection context of base station foundation, and in D2D communicates by letter service data transmission; And after D2D communication switches to cellular communication, use service connection context and base station to carry out the transmission of business datum at UE.
Preferably, above-mentioned stick unit also is used for keeping the D2D that uses in the D2D communication and connecting context after UE switches to cellular communication again from D2D communication;
Correspondingly, the service connection context that transmitting element 81 also is used for passing through to keep sends communication information to the base station, carries UE in the communication information and keeps described D2D and connect contextual information; UE switches to D2D communication again from cellular communication after, use D2D to connect context according to the base station indication and carry out the transmission of described business datum.
For instance, above-mentioned D2D connection context can comprise: the security parameter in the D2D communication.
Described subscriber equipment also can comprise: what notification unit, the service connection context that is used for passing through to keep sent service ending between described UE and described another UE to described base station informs that message is to notify described base station to discharge the service connection context that keeps.
By above-described embodiment as can be known, the subscriber equipment of present embodiment can be realized can switching alternately of two business datums between the UE between D2D and cellular communication, and business procedure is not interrupted.
One of ordinary skill in the art will appreciate that: all or part of step that realizes above-mentioned each embodiment of the method can be finished by the relevant hardware of program command.Aforesaid program can be stored in the computer read/write memory medium.This program is carried out the step that comprises above-mentioned each embodiment of the method when carrying out; And aforesaid storage medium comprises: the various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
It should be noted that at last: above each embodiment is not intended to limit only in order to technical scheme of the present invention to be described; Although with reference to aforementioned each embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps some or all of technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the scope of various embodiments of the present invention technical scheme.
Claims (28)
1. a method for processing business is characterized in that, comprising:
Receive the measurement report relevant with end-to-end D2D that the first user equipment UE sends respectively with the 2nd UE;
Determine that according to described measurement report a described UE and described the 2nd UE in the cellular communication reach the D2D communication condition, then send respectively the configuration messages that configuration D2D communicates by letter to a described UE and described the 2nd UE, described configuration messages is used for carrying out the D2D communication connection by a described UE and described the 2nd UE; And
After a described UE and described the 2nd UE switch to D2D from described cellular communication and communicate by letter, the service connection context of setting up with the base station respectively when keeping a described UE and the 2nd UE and carrying out cellular communication;
A described UE and described the 2nd UE communicate by letter from described D2D switch to cellular communication after, use described service connection context and a described UE and described the 2nd UE to carry out the transmission of business datum.
2. method according to claim 1 is characterized in that, described configuration messages comprises: set up required control information and the security parameter of described D2D communication connection that is used for service data transmission.
3. method according to claim 2 is characterized in that, described control information comprises:
Up-downgoing in the indication D2D communication;
Perhaps
One of them of indicating a described UE and the 2nd UE is main UE, another is for from UE, determines from main UE to the data from UE to be up the D2D communication;
Perhaps
One of them of indicating a described UE and the 2nd UE is main UE, another is for from UE, determines from main UE to the data from UE to be descending the D2D communication;
Perhaps
One of them of indicating a described UE and the 2nd UE is virtual base station, in order to determine the up-downgoing in the D2D communication.
4. method according to claim 2 is characterized in that, described security parameter comprises one or more in the following project:
The COUNT value of the up-downgoing indication of the security algorithm of the key of D2D communication, the parameter that produces the key of D2D communication, D2D communication, the carrying of D2D communication, D2D communication, the counting of D2D communication.
5. method according to claim 4 is characterized in that, the carrying of described D2D communication is consistent with the first carrying that a described UE uses in cellular communication, perhaps
The carrying of described D2D communication is consistent with the second carrying that described the 2nd UE uses in cellular communication.
6. method according to claim 1 is characterized in that, the service connection context of setting up with the base station respectively when the described U E of described reservation and the 2nd UE carry out cellular communication comprises:
The first security parameter when keeping a described UE and base station communication in the service connection context, and
The second security parameter when keeping described the 2nd UE and base station communication in the service connection context.
7. method according to claim 6 is characterized in that, described the first security parameter comprises: first security algorithm, first key and first carrying of a UE in cellular communication;
Described the second security parameter comprises: second security algorithm, second key and second carrying of the 2nd UE in cellular communication.
8. method according to claim 7 is characterized in that, described the first security parameter also comprises: the COUNT value of the counting of a UE in cellular communication;
Described the second security parameter also comprises: the COUNT value of the counting of the 2nd UE in cellular communication.
9. method according to claim 1, it is characterized in that, a described UE and described the 2nd UE communicate by letter from described D2D switch to cellular communication after, if a UE, the 2nd UE keep respectively a described UE and described the 2nd UE and be connected context at the communicate by letter D2D of middle use of D2D, then described method also comprises:
Receive service connection context that a described UE keeps by a UE to the communication information that described base station sends, carry a described UE in the described communication information and keep described D2D and connect contextual information;
And/or
Receive service connection context that described the 2nd UE keeps by the 2nd UE to the communication information that described base station sends, carry described the 2nd UE in the described communication information and keep described D2D and connect contextual information;
When a described UE and described the 2nd UE again switch to described D2D and communicate by letter from described cellular communication, indicate a described UE and be connected D2D that the 2nd UE uses a described UE and the 2nd UE to keep and connect context and carry out the transmission of described business datum.
10. method according to claim 9 is characterized in that, described D2D connects context, comprising: the security parameter of D2D communication.
11. method according to claim 10 is characterized in that, the security parameter of described D2D communication comprises:
The carrying that the key of the security algorithm of D2D communication, D2D communication is communicated by letter with D2D;
Perhaps
The COUNT value of the counting that the carrying of the key of the security algorithm of D2D communication, D2D communication, D2D communication is communicated by letter with D2D.
12. according to claim 1 or 9 described methods, it is characterized in that, also comprise:
Receive the message of informing of service ending between a described UE that service connection context that a described UE and/or the 2nd UE keep by a UE and/or the 2nd UE sends and the 2nd UE, be released to the service connection context that a UE and the 2nd UE keep according to the described message of informing.
13. a method for processing business is characterized in that, comprising:
Carry out in the cellular communication process at user equipment (UE) and another UE, described UE sends the measurement report relevant with end-to-end D2D to the base station;
Described UE receives described base station in response and carries out the configuration messages that D2D communicates by letter in the described UE that described measurement report sends with another UE;
After described UE carries out the D2D communication connection according to described configuration messages and described another UE, the service connection context of setting up with described base station when keeping described UE and carrying out cellular communication, and in described D2D communicates by letter service data transmission;
After described D2D communication switches to cellular communication, use described service connection context and base station to carry out the transmission of business datum at described UE.
14. method according to claim 13 is characterized in that, described configuration messages comprises: set up required control information and the security parameter of described D2D communication connection that is used for service data transmission.
15. method according to claim 14 is characterized in that, described control information comprises:
Up-downgoing in the indication D2D communication;
Perhaps
One of them of indicating described UE and another UE is main UE, another is for from UE, determines from main UE to the data from UE to be up the D2D communication;
Perhaps
One of them of indicating described UE and another UE is main UE, another is for from UE, determines from main UE to the data from UE to be descending the D2D communication;
Perhaps
One of them of indicating described UE and another UE is virtual base station, in order to determine the up-downgoing in the D2D communication.
16. method according to claim 13 is characterized in that, described security parameter comprises one or more in the following project:
The COUNT value of the up-downgoing indication of the security algorithm of the key of D2D communication, the parameter that produces the key of D2D communication, D2D communication, the carrying of D2D communication, D2D communication, the counting of D2D communication.
17. method according to claim 16 is characterized in that, the carrying of described D2D communication is consistent with the carrying that described UE uses in cellular communication, perhaps
The carrying of described D2D communication is consistent with the carrying that described another UE uses in cellular communication.
18. method according to claim 13 is characterized in that, after described UE switches to cellular communication again from D2D communication, also comprise: described UE keeps the D2D that uses in the described D2D communication and connects context; And
The service connection context that described UE passes through to keep sends communication information to described base station, carry described UE in the described communication information and keep described D2D and connect contextual information;
Described UE switches to described D2D communication again from cellular communication after, use described D2D to connect context according to the base station indication and carry out the transmission of described business datum.
19. method according to claim 18 is characterized in that, described D2D connects context, comprising: the security parameter in the D2D communication.
20. method according to claim 19 is characterized in that, the security parameter in the described D2D communication comprises:
The carrying that the key of the security algorithm of D2D communication, D2D communication is communicated by letter with D2D;
Perhaps
The COUNT value of the counting that the carrying of the key of the security algorithm of D2D communication, D2D communication, D2D communication is communicated by letter with D2D.
21. according to claim 13 or 18 described methods, it is characterized in that, also comprise:
The service connection context that passes through to keep sends the message of informing of service ending between described UE and described another UE to described base station, discharge the service connection context that keeps to notify described base station.
22. a base station is characterized in that, comprising:
Receiving element is used for receiving the measurement report relevant with end-to-end D2D that the first user equipment UE sends respectively with the 2nd UE;
Determining unit is used for determining according to described measurement report whether a described UE of cellular communication and described the 2nd UE reach the D2D communication condition;
Transmitting element, be used for determining that in described determining unit a described UE and described the 2nd UE reach the D2D communication condition, then send respectively the configuration messages that configuration D2D communicates by letter to a described UE and described the 2nd UE, described configuration messages is used for carrying out the D2D communication connection by a described UE and described the 2nd UE;
Stick unit is used for after a described UE and described the 2nd UE switch to D2D from described cellular communication and communicate by letter, when keeping a described UE and the 2nd UE and carrying out cellular communication respectively with the service connection context of base station foundation;
Data transmission unit, be used for a described UE and described the 2nd UE communicate by letter from described D2D switch to cellular communication after, use described service connection context and a described UE and described the 2nd UE to carry out the transmission of business datum.
23. base station according to claim 22 is characterized in that, described configuration information comprises: set up required control information and the security parameter of described D2D communication connection that is used for service data transmission.
24. base station according to claim 22 is characterized in that, also comprises:
Releasing unit, be used for receiving the message of informing of service ending between a described UE that service connection context that a described UE and/or the 2nd UE keep by a UE and/or the 2nd UE sends and the 2nd UE, and discharge the service connection context that keeps with a UE and the 2nd UE that keeps according to the described message of informing.
25. base station according to claim 22 is characterized in that, described stick unit also is used for
A described UE and described the 2nd UE communicate by letter from described D2D switch to cellular communication after, be connected context if a UE, the 2nd UE keep respectively a described UE and described the 2nd UE at the communicate by letter D2D of middle use of D2D,
Then described receiving element also is used for
Receive service connection context that a described UE keeps by a UE to the communication information that described base station sends, carry a described UE in the described communication information and keep described D2D and connect contextual information;
And/or
Receive service connection context that described the 2nd UE keeps by the 2nd UE to the communication information that described base station sends, carry described the 2nd UE in the described communication information and keep described D2D and connect contextual information;
When a described UE and described the 2nd UE again switch to described D2D and communicate by letter from described cellular communication, indicate a described UE and be connected D2D that the 2nd UE uses a described UE and the 2nd UE to keep and connect context and carry out the transmission of described business datum.
26. a subscriber equipment is characterized in that, comprising:
Transmitting element is used for carrying out the cellular communication process at user equipment (UE) and another UE, sends the measurement report relevant with end-to-end D2D to the base station;
Receiving element is used for receiving described base station in response and carries out the configuration messages that D2D communicates by letter in the described UE that described measurement report sends with another U E;
Stick unit is used for after carrying out the D2D communication connection according to described configuration messages with described another UE, when keeping described UE and carrying out cellular communication with the service connection context of described base station foundation, and in described D2D communicates by letter service data transmission; And after described D2D communication switches to cellular communication, use described service connection context and base station to carry out the transmission of business datum at described UE.
27. subscriber equipment according to claim 26 is characterized in that, described stick unit also is used for
After described UE switches to cellular communication again from D2D communication, keep the D2D that uses in the described D2D communication and connect context;
Correspondingly, described transmitting element also is used for
The service connection context that passes through to keep sends communication information to described base station, carry described UE in the described communication information and keep described D2D and connect contextual information;
Described UE switches to described D2D communication again from cellular communication after, use described D2D to connect context according to the base station indication and carry out the transmission of described business datum.
28. subscriber equipment according to claim 26 is characterized in that, also comprises:
Notification unit, the service connection context that is used for passing through to keep send the message of informing of service ending between described UE and described another UE to described base station, discharge the service connection context that keeps to notify described base station.
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